He already has as I have been advising all the way through the process including emphasising how important a leak down test was compared to just a compression test.
My latest bit of advise was just to replace the complete cyl head with a low mileage example complete with valves, buckets and cams.
I offered a 10,000 mile complete head which just needs dropped on, with no messy time consuming bench work required.
Replacing the head is a 10 hour job and at £50.00 per hour, well I will leave you to do the maths.